yes it does because it rusts like all other rusting metals.
It causes a chemical reactions.
no they do not rust at all they are food.
Superficially formation of copper oxides.
yes
yes
Iron generally corrodes faster because the oxide layer (rust) does not seal the metal's surface from oxygen like the corrosion on copper does.
the dirty copper is actually the copper oxidizing, or rusting. Putting the copper in distilled water wont remove that rust.
As pennies are not made of iron, they cannot rust under any circumstances.However they can corrode. The copper shell will produce a green corrosion product, the zinc core can corrode completely away as a transparent water soluble corrosion product. This corrosion will be very slow in plain water (much slower than iron rusts in water) but will be much faster if an acid is added to the water.
Verdigris.
Copper does not react with water, but it slowly reacts with atmospheric oxygen forming a layer of brown-black copper oxide. Unlike the iron oxidation, this oxide prevents the bulk corrosion of parent material i.e. copper.
salt will rust the coin faster thanfresh water
Yes they will.
Modern coins cannot rust, as they are not made of iron.
Iron will rust more quickly in salt water than fresh freshwater. The salt in the water accelerates the corrosion process.
Salt
salt water cause of the salt particals in the water
A nail would probably rust faster in fresh water because rusting, also called oxidation occurs when large amounts of oxygen are forced into the metals pores, causing it to turn brittle.
copper and silver dont rust. but copper tarnishes and so does silver. but copper will tarnish faster than silver. also, learn to spell please.
A penny will rust faster because it made entirely of zinc with a thin outer coating of copper, and zinc is made to rust unlike nickel which is used to make nickels, dimes, etc...
It depends on the coin, however most will not as generally most coins do not contain iron (or steel). coins made from copper or tin will not rust ever.
Copper doesn't rust
i think it's none the answer is salt water